This option is used to determine how a geometry is converted to text. The following are the two main contexts in which the
option is used:

fetching a value as text from a client application

Executing a CAST statement. For example: CAST( geometry-expression AS LONG VARCHAR )

Assignments from geometry types to CHAR types give an error in contexts other than fetching from a client application and
the CAST statement. For example, you cannot call a function or procedure that takes a CHAR parameter and pass a geometry,
nor can you assign a geometry to a LONG VARCHAR variable.